| Q | IESA 8th Grade State Qualifying | 49.24 | State Qualifying |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed |
|---|---|---|---|---|---|---|---|
| 3 | Oak Prairie | A | Williams | Turziak | Rak | Peacock | 1:04.00 |
| 4 | Percy Julian | A | Irighobe | Ching | Banks | Owens | 57.90 |
| 5 | Gwendolyn Brooks (Oak Park) | A | Reed | Jacoby | Marks | St.Pierre | 59.00 |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed |
|---|---|---|---|---|---|---|---|
| 2 | Jefferson (Woodridge) | A | Nelson | Mensah | McNulty | Armour | 54.39 |
| 3 | Prairie-Hills | A | Mattison | Campbell | Streeter | Wallace | DNS |
| 4 | Homer | A | Campins | Adeniyi | Buenafe | Vassilakis | 49.90 |
| 5 | Old Quarry | A | Maka | Logan | Jaquez | Patnaude-Noodwang | 50.79 |
| 6 | Unity (Cicero) | A | Saez | Trinidad | Rodriguez | Vicuna | 52.31 |
| 7 | Jack Hille | A | Banialis | Morales | Sandoval | Keating | DNS |